Inflatable tire.



No. 676,733 Patented lune I8, |.90|.

' B. V. CANFIELD. INFLATABLE TIRE.

(Application med oc'z. 4, 1900. (N o M o d e l.

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BENTON V. CANFIELD, OF INDIANAPOLIS, INDIANA.

INFLATABLE TIRE.

SPEGIFISATION forming part of Letters Patent 0. 676,733, dated June 18, 1901. Application filed October 4,1900. Serial No. 82,062. (N0 11101161.)

To all 'Loh/0777, it may concern:

Be it known that I, BENTON V. CANEIELD, a citizen of the United States, residing at Indianapolis, in the county of Marion and State of Indiana, have invented certain newand useful Improvements in Single-Tube Intiatable Tires, of which the following is a speciiication. A

Illy invention relates to improvements in single-tube inflatable tires; and one object is to provide a single-tube tire that is suitable for an ordinary crescent rim and to be retained and prevented from slipping thereon Without the use of cementing processes in common use, and another object being to provide facilities for easy repairing of punctu res from the inside another object being to provide means wherebyinjury to the rim and tire is prevented When the tire becomes punctu red and it is desired to ride home Without stopping to repair the tire on the Way. I attain these objects by means and construction illustrated in the accompanying drawings, in Which- Figure l is a cross-section of the complete tire and the rim on which it is mounted. Fig. 2 is a detached view in cross-section of the tire, showing the sealing and locking sections separated at the point where they lock together. Fig. 3 shows the tire closed preparatory to being mounted on the rim. Fig. fl is a perspective view of a section of the rim. Fig. 5 is a broken section showing the independent air-duct. Fig. 6 represents a three-Way valve which may be used in one form or construction of my device.

d represents the main body of the tire.

b represents the sealing-tube.

cis the rim of the Wheel.

a is an annular flange or tongue adapted to engage with the annular groove c2, both being corrugated at contact -'surfaces seen at di K d4 is an annular feather-edge of the base or rim side of the tire or thickened part toward the rim. d5 is a projecting annular lip flange or keeper under which the said feather-edge a4 is projected and held down when in operation. The outside overlapping ysection of sheath a6, projecting from co5 to o7, is placed in position shown in Fig. 3 preparatory to placing on the Wheel-rim c and is provided one side thereof, where it is adapted to be engaged with the annular recesses ab in the annular tongue-flange a. The sealing-tube h is provided, preferably, with a short valve-tube b2, communicating with the tube b and adapted by a screw-valve or other suitable means for the attachment of the common tire-pump whereby airis compressed into the tire. The

tube h has one or more incisions made through its inner Wall at b' at points provided with suitable air-ducts d10 through said thickened section, conducting air 4from sealing tube passing through said incisions h to tire. The outwardly-projecting annular ridge a9 provides support when by accident the tire becomes fiat to prevent injury to the rim When being ridden in au exhausted condition, said central ridge being of any suitable proportions.

d is an independent air-duct With the valve-stem di2 provided, to which is attached any ordinary valve-and-pump connection for Jthe inflation of the tire independently of the infiation of the sealing-tube h shown in the other figures, in which case the sealing-tube is not provided with incisions or air-outlets to the tire proper. d is a three-Wayy valve which may be used in the sealing-tube b, held in the stern b2 and extending through the tube with its port cl3, which is adapted'to communicate directly With the air-duct d10 and in which arrangement the sealing-tube b is not provided with aforesaid incisions, so that it may be inflated first and independently when the port di of said valve is open, and Whereafter the rotatable member d may be turned so that the openings d2 and d3 coincide, so that said port d3 admits air through the air-duct d10 into the tire, and port d4 to sealing-tube is closed, and for further security against leakage I place a valve in duet am.

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The latter two forms of construction provide the retention in sealing-tube of an air-pressure independent from that of the tire, so that the binding force to the rim is not so much affected by low pressure in the tireias where the tire and sealing-tube are inflated in common,as is the case With the construction shown in Figs. 1, 2, and 3.

In the application and use of my device the tire is closed, as shown at Fig. 3, and mounted, as seen at Fig. l, and air-pressu re pumped into it by way of a pump or other means connected with the tube b2, whereby is inflated first the tube I) within its recess ab in the tongue a', so thatits dilation for the purpose of sealing is accomplished before the incisions h are spread to admit the passage of airinto the interior of the tire proper, when the interlocking and overlapping partsof the tire become compressed upon each other,whereby the tire is drawn firmlydown upon the rim and securely held, or, if the tire is of the construction shown in Fig. 5, the sealing-tube is first inflated,and then the tire is inflated independently of and after the sealingtube is inflated.

I am aware that many changes in form or proportion of parts and in details of construction of my device here shown may be resorted to by a mechanic skilled in the art without departing from the spirit and scope of my invention, and I would have it understood that I reserve the right to make all modifications in my device in its application as may fall fairly within such scope.

Having described and shown my invention, what I claim as new, and desire to secure by Letters Patent, is-.

l. In a single-tube inflatable tire, a sheath forming the tire, overlapping edges of said sheath overlapping at the seat of said tire, one edge pressing inside of the other, means for locking said overlapping edges and a sealing-tube between said overlapping sections as set forth.

2. In a single-tube, inflatable tire formed of a sheath continuous over the outer or tread side and overlapping on inner or seat side, an annular groove or recess formed in inside lap, an annular tongue-flange formed on outside lap adapted to engage with said groove in inside lap, a sealing-tube embedded in said groove and an annular recess at one side of said tongue adjacent to said sealing-tube, all combined to operate as set forth.

3. In a single-tube iniiatable tire formed of a sheath or wall continuous at the tread and overlappingY at the seat or rim side of tire, a thickened section near the edge of the inside lap, a longitudinal annular groove formed in said thickened section, a longitudinal annular tongue adapted to enter said groove, corrugations on the impinging surfaces of said groove and tongue on one side thereof, a recess in said groove at side opposite from said corrugations, a sealing-tube xed in saidA recess and a corresponding recess in said tongue opposite to recess in said groove and a sealingtube in said groove adapted to be dilated by the pressure of air within the tire pressing against the said groove on one side and against the tongue on the opposite side, whereby the corrugated impinging surfaces of said groove and tongue are pressed firmly together thereby sealing against leakage of air, all substantially as set forth.

il. In a single-tube infiatable tire, a sheath overlapping at under or rim side of said tire, a groove and tongue provided on respective edges of said sheath, the outer lap preferably being provided with the tongue and the inner lap with the said groove, a thickened longitudinal section provided on inner lap terminating in a feather-edge, a lip or hook fiange provided on inner side of tire-wall, project ing inwardly and downwardly and adapted to catch over said'feather-edge to prevent said thickened section from raising up when the air-pressure is pumped into the sealingtube, substantially as specified.

5. In a single-tube infiatable tire, a sheath separable at its seat side by overlappi ng edges, a thickened section at inner lap, a central enlarged annular ridge formed on the thickened section to render cushioning effect when airpressure islow in tire, a tongue and a groove provided respectively on overlapping edges adapted to engage with each other to lock said edges together and a sealing-tube embedded between adjacent sides of said tongue and groove, as set forth.

6. In a sin gle-tube iniiatable tire, a 'sheath separable at its seat side by overlapping edges, a tongue and groove provided respectively on said overlapping edges adapted to enga-ge with each other to lock said sides together, a sealing tube embedded between adjacent sides of said tongue and groove, incisions in Walls of said sealing-tube and air ducts 'or passages communicating from said incisions to air-chamber of tire, as set forth.

7 In a single-tube infiatable tire, a sheath separable at its seat by overlapping sides, a thickened section at inner lap, a central annular enlarged ridge formed on thickened section to render cushioning effect when air-presi sure is low in tire, a tongue and groove provided respectively on overlapping sides adapted to engage with each other to lock said sides together, a sealing-tube embedded between adjacent sides of said tongue and groove, incisions in walls of said sealing-tube and air ducts or passages communicating from said incisions to air-chamber of tire, substantially as set forth.

S. In a single-tube inflatable tire the combination with a sheath having separable overlapping sides,a tongue and groove provided on respective laps adapted to interlock with each other as shown, a sealing-tube provided Within said groove adapted to dilate by pressure of the air due to inflation of tire, a series of bosses or stops fixed on tire at rim side thereof and a rim provided with a series of re IOO IIO

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cesses adapted to engage with said stops to prevent the tire from creeping on said rim; substantially as specified.

9. In a single-tube inflatable tire, a tire formed of a single sheath separable at the rim side one edge overlapping the other, one being thickened, an annular groove provided in thickened section thereof andan annular tongue provided in the other overlapping edge adapted to engage with said groove whereby the said edges of said sheath are locked together, an annular sealing-tube embedded in said groove and adapted byinflation to press against the side of said groove and the tongue and thereby to seal against leakage of air andan air inlet or duct provided in said tire, whereby air may be conducted into the tire all combined as set forth.

lO. In a single-tube inflatable tire the combination with a sheath forming the tire being continuous over the tread and overlapping the edges thereof at rim or seat side, atongue and groove provided on respective edges over lapping, a sealing-tube located so as to coact With said tongue and groove, and provided with stein for attachment of valve and pump for theinflation thereof, and an air-duct and valve-stein provided and communicating with the tire independently of said sealing-tube, substantially as set forth.

l1. In a single-tube inflatable tire formed of a sheath overlapping at rim or seat side, a tongue and groove provided in respective overlapping sides adapted to engage and lock said sides together, a sealing-tube mounted in said groove between the adjacent slaek surfaces of said tongue and groove and adapted to press them tightly together and means for inlating the sealing-tube and the tire independently of each other, as specified.

I2. In a single-tube inflatable tire formed of a sheath overlapping at rim or seat side, a tongue and groove provided on overlapping sides, a sealing-tube provided between slack sides ot' said tongue and groove, a threeWay valve provided in said sealing-tube adjustable to two positions, whereby inating-air may be first delivered to said sealing-tube and next to the tire proper; substantially as set forth.

In testimony that I claim the foregoing as my invention I subscribe my name hereto, in the presence of witnesses, this 20th day of August, 1900.

BENTON v. GANFIELD.

Witnesses: l

G. R. CANFIELD, A. L. TEEToR. 

